<!DOCTYPE html>
<html>
<head>
    <title></title>
    <style type="text/css">
        #testIF1{ height:20px; background: #f00;;}
    </style>
</head>
<body>
    <div id="testIF1" style="width:100px; border:1px solid #000;">

    </div>
</body>
</html>